[HBASE-2517] During reads when passed the specified time range, seek to next column

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.90.0
• Component/s: regionserver
• Labels: moved_from_0_20_5
• Assignee: Pranav Khaitan
• Reporter: Jonathan Gray
• Created: 05/May/10 17:24
• Updated: 20/Nov/15 12:41
• Resolved: 15/Jul/10 17:16

Description

When we are processing the stream of KeyValues in the ScanQueryMatcher, we will check the timestamp of the current KV against the specific TimeRange. Currently we only check if it is in the range or not, returning SKIP if outside the range or continuing to other checks if within the range.

The check should actually return SKIP if the stamp is greater than the TimeRange and NEXT_COL if the stamp is less than the TimeRange (we know we won't take anymore columns from the current column once we are below the TimeRange).

Issue Links

• is related to: HBASE-2450 For single row reads of specific columns, seek to the first column in HFiles rather than start of row